Operating mode switching apparatus for a hammer drill

Details Operating mode switching apparatus for a hammer drill Operating mode switching apparatus for a hammer drill

1998-01-28

2000-03-14

Vo, Peter

Tool driving or impacting

Drive adjustable to completely change kind of drive

Adjustable to impacting device

173109, 173201, B25D 1104

Patent

active

060359455

ABSTRACT:
A second pinion is rotatably supported around an intermediate shaft and slidable in an axial direction of the intermediate shaft. A pinion sleeve is fixed to the intermediate shaft. A first clutch mechanism selectively engages and disengages the second pinion with and from the pinion sleeve to selectively transmit and interrupt a rotational force of a motor to a tool attached on a front end of a hammer drill. A sleeve is supported around the intermediate shaft so as not to be rotatable about the intermediate shaft but slidable in the axial direction of the intermediate shaft. A motion converting member is rotatably supported around the intermediate shaft. The motion converting member converts the rotational force of the motor into the percussion force. A second clutch mechanism selectively engages and disengages the motion converting member with and from the sleeve to selectively transmit and interrupt the percussion force to the tool.

REFERENCES:
patent: 5320177 (1994-06-01), Shibata et al.
patent: 5435397 (1995-07-01), Demuth

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